[FolkMaster]

The young man gaped at the monstrous orb. Its massive quaking surface almost radiant in the light of the forest, slick with sweat as it was. His immense flanks were bursting with barely contained life. His navel was bulbous on the lower slope of the horrific immensity. It gurgled and shook, drawing a whine from the boy. Matthew titled his head upward as he felt the bones of his hips and pelvis grind against each other, the heavy bulk of his womb pressed down on them cruelly. He could feel its head forcing its way through, the shoulders shoving the bones apart. Again his belly contracted and heaved, making him cry out. Matthew thought he would get hooves first, like James, but that wasn't the case. "Oh gods! It hurts! It huu-uuuugh!"

Again the centaur stomped its hoof, giving a grunt of a whinnie as he did so. Both men could feel their bellies tighten and bloat as the foals tried to comply with their father's encouragement.